If you've upgraded your iPhones to the just-released iOS version 11 and your email is hosted by Microsoft's Outlook.com, Office 365 or Exchange 2016, you may now find yourself unable to send email from your iPhone. It sounds like a known issue and that it is being work…
The MX servers for Hotmail UK changed in DNS overnight. For those who are caching DNS or have hard coded DNS entries, you're going to run into problems with false positive "user unknown" bounces. Time to flush the cache and make sure you're relying on what'…